The high-quality stainless steel stem breaks down into three pieces you can customize the height. Colorful resin accents on the stem go perfectly with the scale-like design on the base. A removable diffuser on the downstem helps quiet this beast or keep it it off to get the full rumble! Where is the purge? It's contained within the hub to keep the sleek lines tight, but you can't still access it when disassembled for cleaning. Innovation in its finest!